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Tactile processing device

a processing device and a technology of a tactile body, applied in the direction of measurement devices, instruments, material analysis, etc., can solve the problems of difficult to control the frictional feel independently difficult to control the frictional feel by using only the ultrasonic vibrator, so as to simplify the configuration and control

Active Publication Date: 2011-06-30
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0069]According to the present invention, tactile sensing and tactile display can get done adaptively to the status of contact between a person's hand and the object, and therefore, only minimum required tactile information, which is indispensable to represent his or her sensation, can be processed non-wastefully. That is why since only a part of the actuator of the tactile display, which contributes to having the person get a particular feel, needs to be driven, the actuator can have its configuration and control simplified.

Problems solved by technology

Since the squeeze effect produced by the ultrasonic vibrator decreases the coefficient of friction, it is difficult to control the frictional feel independently using only the ultrasonic vibrator.
In this case, since the coefficient of friction decreases due to the squeeze effect produced by the ultrasonic vibrator, it is difficult to control the frictional feel by using only the ultrasonic vibrator.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

embodiment 1

[0154]A device for searching for a material by estimating the specific type of the feel to be gotten particularly intensely by the feeler and its tactile intensity by observing his or her fingertip's movement (i.e., by determining what kind of tactile movement has been performed) will be described as a first specific preferred embodiment of the present invention. This device estimates the tactile intensity H by the following Equation (8), which is obtained by modifying Equation (7):

H(m)=C(m)·X   (8)

where m is a variable representing the kind of the tactile movement and will be referred to herein as a “tactile movement variable m”. This equation means that a tactile weight vector for use to obtain the tactile intensity is variable with the tactile movement variable m and that if a different type of tactile movement is performed on a material, then a different tactile intensity H will be obtained.

[0155]For example, the tactile intensity H(m1) to be obtained when a tracing movement is ...

embodiment 2

[0228]In the first preferred embodiment of the present invention described above, the type of the feel that the feeler is getting is supposed to be estimated unequivocally by the kind of the tactile movement. Actually, however, even though feelers are getting quite different types of feels, their tactile movements could be very similar and the tactile movement variables m represented discretely could be the same. In that case, even if the tactile movement variable m is determined by the kind of the tactile movement the feeler is performing, the feel he or she is getting cannot be determined automatically, which is a problem. According to this preferred embodiment, however, such a problem can be overcome by adopting the idea of probability model.

[0229]First of all, it will be described how in principle the type of the feel can be estimated by the tactile movement variable m following the probability model.

[0230]Suppose in a learning process in which the feeler who is a subject under ...

embodiment 3

[0275]According to the principle of the present invention that has already been described at the beginning of the description of the first preferred embodiment, by expressing a feel as a vector, of which the components are represented by the respective tactile intensities of multiple types of feels, a variation in feel with the change of kinds of tactile movements can be processed more directly. First of all, this principle will be described.

[0276]Suppose the number of tactile types is M. If the tactile intensity associated with each type of feel the feeler is getting is identified by Hk, the overall feel can be represented as an M-dimensional column vector by the following Equation (18):

H=(H1⋮Hk⋮HM)(18)

This vector will be referred to herein as a “tactile feature quantity vector”. In this case, the variation in tactile intensity with the tactile movement variable m represented by Equation (8) can be expressed by the following Equations (19):

H(m)=C(m)·XwhereC(m)=(C10(m)C11(m)⋯C1n(m)⋮...

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Abstract

The present invention provides a technique for sensing and reproducing various feels, which a person gets discretely over a period of time, by time sequential sensing.A tactile processor includes: a movement measuring section for determining a status of contact between a person and an object; a physical measuring section for measuring a physical property value of the object; and a physical-psychological transformation section for generating a tactile feature quantity based on the physical property value that has been measured by the physical measuring section and on the weight of the physical property of an arbitrary object. The weight is variable according a status of contact between the person and the arbitrary object and is calculated based on not only a physical property value representing the status of contact between the person and the arbitrary object but also a tactile feature quantity representing a feel that the person gets when touching the arbitrary object.

Description

TECHNICAL FIELD[0001]The present invention relates to an apparatus, method and program for measuring, by numerical values, a feel that a person would have when he or she touches something and reproducing or searching for such a feel.BACKGROUND ART[0002]Recently, thanks to amazing performance enhancement of network devices and portable digital or telecommunications devices, telecommunications between two distant locations can be done more and more easily and efficiently year after year. Among other things, visual information conveyance means have developed so rapidly these days that high-definition digital cameras and big-screen display monitors are now available almost everywhere to provide everyone around the globe with highly realistic visual information, no matter where he or she is located. In the meantime, the performance of audio information conveyance means have also been enhanced so astonishingly nowadays that multi-channel reproduction and other techniques now realize wide-...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06F3/045G06F19/00G06F3/038
CPCG06F3/016G06F3/014
Inventor MOTOMURA, HIDETOSUZUKI, TETSUOKIMOTO, YOSHIYUKI
Owner PANASONIC CORP
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